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US 6,936,090 B2Granted
Process for isolating rhenium
AssigneeH. C. Starck GmbH
InventorsJuliane Meese-Marktscheffel, Viktor Stoller, Armin Olbrich, Wolfgang Mathy, Michael Erb
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Abstract
A process for elution of rhenium adsorbed on strongly basic ion-exchange resins by means of highly concentrated aqueous hydrochloric acid solution is described, in which the ion-exchange resin is treated with aqueous solution containing an oxidizing agent.
Claims10
A process for isolating rhenium comprising:
- (a) providing a strongly basic ion exchange resin, said strongly basic ion exchange resin having a loading capacity;
- (b) absorbing rhenium onto said strongly basic ion exchange resin;
- (c) eluting absorbed rhenium from said strongly basic ion exchange resin with a highly concentrated aqueous hydrochloric acid solution, thereby forming an eluate comprising rhenium;
- and
- (d) isolating rhenium from said eluate,
- wherein said strongly basic ion-exchange resin is treated with an aqueous solution containing an oxidizing agent,
- further wherein the loading capacity of said strongly basic ion exchange resin is not impaired by said process.
4 more elements
Dependencies are inferred from the claim text.